AS4643 202.139.104.0/21 CIDR and IP Range Summary.ASN: 4643 - Optus Customer NetworkHost Count: 2046Addressable IPs: 2048202.139.104.0/24202.139.105.0/24202.139.106.0/24202.139.107.0/24202.139.108.0/24202.139.109.0/24202.139.110.0/24202.139.111.0/24